The Tarka Line (named after the animal hero in Henry Williamson's book Tarka the Otter) is a railway line from Exeter to Barnstaple in Devon, England. The line follows the River Creedy, River Yeo and River Taw for some of its route. At Coleford Junction there is a branch to Okehampton, which has recently reopened to passenger trains as the Dartmoor Railway.